I really like this quote from wiki.. "The resulting design, the Yakovlev Yak-55, was a single-engined all-metal cantilever monoplane. The aircraft's wing is mounted midway up the fuselage and is of thick, symmetrical section to aid inverted flight"

I removed this 22.5 pound generator and installed a 2.9 pound B&C mini 10 amp alternator.
I've already shaved about 10 pounds switching to LiFePO4 batteries and the cooling gills are off.
I hope to eventually have the lightest Yak55M
There are several heavy components just above the wing spar and a bunch of unused wire in massive bundles sleeved tapped & tied together. I hope to thin this extra weight out over the winter.